作者:Chang-Wei Li、Hua-Jin Dong、Cheng-Bin Cui
DOI:10.3390/molecules20022034
日期:——
Twelve galloyl glucosides 1–12, showing diverse substitution patterns with two or three galloyl groups, were synthesized using commercially available, low-cost D-glucose and gallic acid as starting materials. Among them, three compounds, methyl 3,6-di-O-galloyl-α-D-glucopyranoside (9), ethyl 2,3-di-O-galloyl-α-D-glucopyranoside (11) and ethyl 2,3-di-O-galloyl-β-D-glucopyranoside (12), are new compounds and other six, 1,6-di-O-galloyl-β-D-glucopyranose (1), 1,4,6-tri-O-galloyl-β-D-glucopyranose (2), 1,2-di-O-galloyl-β-D-glucopyranose (3), 1,3-di-O-galloyl-β-D-glucopyranose (4), 1,2,3-tri-O-galloyl-α-D-glucopyranose (6) and methyl 3,4,6-tri-O-galloyl-α-D-glucopyranoside (10), were synthesized for the first time in the present study. In in vitro MTT assay, 1–12 inhibited human cancer K562, HL-60 and HeLa cells with inhibition rates ranging from 64.2% to 92.9% at 100 μg/mL, and their IC50 values were determined to be varied in 17.2–124.7 μM on the tested three human cancer cell lines. In addition, compounds 1–12 inhibited murine sarcoma S180 cells with inhibition rates ranging from 38.7% to 52.8% at 100 μg/mL in the in vitro MTT assay, and in vivo antitumor activity of 1 and 2 was also detected in murine sarcoma S180 tumor-bearing Kunming mice using taxol as positive control.
合成了十二种不同取代模式的鞣酸葡萄糖苷1–12,这些化合物含有两个或三个鞣酸基团,起始材料为商业可得的低成本D-葡萄糖和鞣酸。其中,三种化合物,即甲基3,6-二-O-鞣酸-α-D-葡萄糖吡喃苷(9)、乙基2,3-二-O-鞣酸-α-D-葡萄糖吡喃苷(11)和乙基2,3-二-O-鞣酸-β-D-葡萄糖吡喃苷(12)为新化合物,其余六种化合物,1,6-二-O-鞣酸-β-D-葡萄糖(1)、1,4,6-三-O-鞣酸-β-D-葡萄糖(2)、1,2-二-O-鞣酸-β-D-葡萄糖(3)、1,3-二-O-鞣酸-β-D-葡萄糖(4)、1,2,3-三-O-鞣酸-α-D-葡萄糖(6)和甲基3,4,6-三-O-鞣酸-α-D-葡萄糖吡喃苷(10),在本研究中首次合成。在体外MTT实验中,化合物1–12对人类癌细胞K562、HL-60和HeLa的抑制率在100 μg/mL时范围为64.2%至92.9%,其IC50值在测试的三种人类癌细胞系中变动为17.2–124.7 μM。此外,化合物1–12在体外MTT实验中对小鼠肉瘤S180细胞的抑制率在100 μg/mL时范围为38.7%至52.8%,并且在使用紫杉醇作为阳性对照的情况下,检测到化合物1和2在小鼠肉瘤S180肿瘤-bearing昆明小鼠中的体内抗肿瘤活性。